We divide 518518 by 80
The aim is to understand the frequency of 80 in 518518.

Moving on to step 1:
If we divide 5 by 80, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 80

Let's proceed to step 2:
When dividing 51 by 80, we get 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (8) of the dividend behind the 51 and repeat the process: 518 / 80

On to step 3:
The number 80 fits into 518 6 times, leaving a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 480 from 518 to get 38.
Include the next digit (5) from the dividend after 38, then repeat: 385 / 80

Step 4:
The number 80 fits into 385 4 times, leaving a remainder of 65.
The next digit of our result is 4. 
Result so far: 64.0
Deduct 320 from 385 and we're left with 65.
Append the next digit (1) from the dividend to 65 and continue with: 651 / 80

Going ahead to step 5:
If we divide 651 by 80, we get 8 and a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 648.0
Subtract 640 from 651 to get 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 80

Step 6:
If we divide 118 by 80, we get 1 and a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 6481.0
Subtracting 80 from 118 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 7:
When dividing 380 by 80, we get 4 with a remainder of 60.
The number 4 becomes the next digit in our result. 
Result so far: 6481.4
If we take 320 away from 380, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
When dividing 600 by 80, we get 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 6481.47
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 9:
The number 80 fits into 400 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 6481.475
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6481.475
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 6481.475
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 6481.475, with a leftover of 0.0.